P135A 2015 GMC Sierra Code - Ignition Coil Supply Voltage Circuit Bank 1
Quick Answer
The ignition system uses an individual ignition coil for each cylinder. Common causes include Blown Ignition Coil Fuse, Ignition Coil Fuse harness is open or shorted, Ignition Coil Fuse circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P135A 2015 GMC Sierra indicates Ignition Coil Supply Voltage Circuit Bank 1.
- Common causes
- Common causes include Blown Ignition Coil Fuse, Ignition Coil Fuse harness is open or shorted, Ignition Coil Fuse circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P135A 2015 GMC Sierra Description
What are the Possible Causes of the DTC P135A 2015 GMC Sierra?
- Blown Ignition Coil Fuse
- Ignition Coil Fuse harness is open or shorted
- Ignition Coil Fuse circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P135A 2015 GMC Sierra?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P135A 2015 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P135A 2015 GMC Sierra Code
What does the OBDII code P135A mean on a 2015 GMC Sierra?
The P135A code indicates an issue with the ignition coil supply voltage circuit on Bank 1, which affects the proper functioning of the ignition system.
What are the common symptoms of the P135A code?
Symptoms may include engine misfires, rough idling, reduced power, poor fuel economy, and the check engine light turning on.
What causes the P135A code to appear?
Common causes include a faulty ignition coil, damaged wiring or connectors in the ignition circuit, a bad engine control module (ECM), or issues with the power supply to the ignition coil.
How do I diagnose the P135A code?
Start by checking the ignition coil and its wiring for damage, test the voltage at the ignition coil connector, and use a scan tool to monitor live data for abnormalities in the ignition system.
Can I drive my 2015 GMC Sierra with the P135A code?
Driving with this code is not recommended, as it can cause further damage to the engine and catalytic converter due to misfires or poor ignition performance.
How can I fix the P135A code?
Repair steps may include replacing the faulty ignition coil, repairing damaged wiring or connectors, and ensuring the proper voltage supply to the ignition circuit.
How much does it cost to repair the P135A code?
Repair costs vary depending on the issue, but replacing an ignition coil typically costs $100-$300, while wiring repairs can cost $50-$200.
Can a dead battery cause the P135A code?
A weak or dead battery may cause voltage supply issues, which could potentially trigger the P135A code, but it is not a common cause.
Does the P135A code only affect Bank 1?
Yes, the P135A code specifies an issue with the ignition coil supply voltage circuit on Bank 1, which is the side of the engine containing cylinder 1.
What tools are needed to troubleshoot the P135A code?
You’ll need a digital multimeter to test voltage, a scan tool to read and clear codes, and possibly basic hand tools to inspect and replace components.
Discuss the causes and fixes for P135A 2015 GMC Sierra OBDII Code
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